我们从Python开源项目中，提取了以下29个代码示例，用于说明如何使用audioop.lin2alaw()。
def test_issue7673(self): state = None for data, size in INVALID_DATA: size2 = size self.assertRaises(audioop.error, audioop.getsample, data, size, 0) self.assertRaises(audioop.error, audioop.max, data, size) self.assertRaises(audioop.error, audioop.minmax, data, size) self.assertRaises(audioop.error, audioop.avg, data, size) self.assertRaises(audioop.error, audioop.rms, data, size) self.assertRaises(audioop.error, audioop.avgpp, data, size) self.assertRaises(audioop.error, audioop.maxpp, data, size) self.assertRaises(audioop.error, audioop.cross, data, size) self.assertRaises(audioop.error, audioop.mul, data, size, 1.0) self.assertRaises(audioop.error, audioop.tomono, data, size, 0.5, 0.5) self.assertRaises(audioop.error, audioop.tostereo, data, size, 0.5, 0.5) self.assertRaises(audioop.error, audioop.add, data, data, size) self.assertRaises(audioop.error, audioop.bias, data, size, 0) self.assertRaises(audioop.error, audioop.reverse, data, size) self.assertRaises(audioop.error, audioop.lin2lin, data, size, size2) self.assertRaises(audioop.error, audioop.ratecv, data, size, 1, 1, 1, state) self.assertRaises(audioop.error, audioop.lin2ulaw, data, size) self.assertRaises(audioop.error, audioop.lin2alaw, data, size) self.assertRaises(audioop.error, audioop.lin2adpcm, data, size, state)
def test_string(self): data = 'abcd' size = 2 self.assertRaises(TypeError, audioop.getsample, data, size, 0) self.assertRaises(TypeError, audioop.max, data, size) self.assertRaises(TypeError, audioop.minmax, data, size) self.assertRaises(TypeError, audioop.avg, data, size) self.assertRaises(TypeError, audioop.rms, data, size) self.assertRaises(TypeError, audioop.avgpp, data, size) self.assertRaises(TypeError, audioop.maxpp, data, size) self.assertRaises(TypeError, audioop.cross, data, size) self.assertRaises(TypeError, audioop.mul, data, size, 1.0) self.assertRaises(TypeError, audioop.tomono, data, size, 0.5, 0.5) self.assertRaises(TypeError, audioop.tostereo, data, size, 0.5, 0.5) self.assertRaises(TypeError, audioop.add, data, data, size) self.assertRaises(TypeError, audioop.bias, data, size, 0) self.assertRaises(TypeError, audioop.reverse, data, size) self.assertRaises(TypeError, audioop.lin2lin, data, size, size) self.assertRaises(TypeError, audioop.ratecv, data, size, 1, 1, 1, None) self.assertRaises(TypeError, audioop.lin2ulaw, data, size) self.assertRaises(TypeError, audioop.lin2alaw, data, size) self.assertRaises(TypeError, audioop.lin2adpcm, data, size, None)
def test_lin2alaw(self): self.assertEqual(audioop.lin2alaw(data[0], 1), b'\xd5\xc5\xf5') self.assertEqual(audioop.lin2alaw(data[1], 2), b'\xd5\xd5\xd5') self.assertEqual(audioop.lin2alaw(data[2], 4), b'\xd5\xd5\xd5')
def test_alaw2lin(self): # Cursory d = audioop.lin2alaw(data[0], 1) self.assertEqual(audioop.alaw2lin(d, 1), data[0]) if endian == 'big': self.assertEqual(audioop.alaw2lin(d, 2), b'\x00\x08\x01\x08\x02\x10') self.assertEqual(audioop.alaw2lin(d, 4), b'\x00\x08\x00\x00\x01\x08\x00\x00\x02\x10\x00\x00') else: self.assertEqual(audioop.alaw2lin(d, 2), b'\x08\x00\x08\x01\x10\x02') self.assertEqual(audioop.alaw2lin(d, 4), b'\x00\x00\x08\x00\x00\x00\x08\x01\x00\x00\x10\x02')
def _lin2alaw(self, data): import audioop return audioop.lin2alaw(data, 2)
def test_lin2alaw(self): self.assertEqual(audioop.lin2alaw(datas[1], 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') self.assertEqual(audioop.lin2alaw(datas[2], 2), b'\xd5\x87\xa4\x24\xaa\x2a\x55') self.assertEqual(audioop.lin2alaw(datas[4], 4), b'\xd5\x87\xa4\x24\xaa\x2a\x55')
def test_alaw2lin(self): encoded = b'\x00\x03\x24\x2a\x51\x54\x55\x58\x6b\x71\x7f'\ b'\x80\x83\xa4\xaa\xd1\xd4\xd5\xd8\xeb\xf1\xff' src = [-688, -720, -2240, -4032, -9, -3, -1, -27, -244, -82, -106, 688, 720, 2240, 4032, 9, 3, 1, 27, 244, 82, 106] for w in 1, 2, 4: self.assertEqual(audioop.alaw2lin(encoded, w), packs[w](*(x << (w * 8) >> 13 for x in src))) encoded = ''.join(chr(x) for x in xrange(256)) for w in 2, 4: decoded = audioop.alaw2lin(encoded, w) self.assertEqual(audioop.lin2alaw(decoded, w), encoded)
def test_alaw2lin(self): encoded = b'\x00\x03\x24\x2a\x51\x54\x55\x58\x6b\x71\x7f'\ b'\x80\x83\xa4\xaa\xd1\xd4\xd5\xd8\xeb\xf1\xff' src = [-688, -720, -2240, -4032, -9, -3, -1, -27, -244, -82, -106, 688, 720, 2240, 4032, 9, 3, 1, 27, 244, 82, 106] for w in 1, 2, 4: self.assertEqual(audioop.alaw2lin(encoded, w), packs[w](*(x << (w * 8) >> 13 for x in src))) encoded = bytes(range(256)) for w in 2, 4: decoded = audioop.alaw2lin(encoded, w) self.assertEqual(audioop.lin2alaw(decoded, w), encoded)
def test_lin2alaw(self): self.assertEqual(audioop.lin2alaw(datas[1], 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') self.assertEqual(audioop.lin2alaw(bytearray(datas[1]), 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') self.assertEqual(audioop.lin2alaw(memoryview(datas[1]), 1), b'\xd5\x87\xa4\x24\xaa\x2a\x5a') for w in 2, 3, 4: self.assertEqual(audioop.lin2alaw(datas[w], w), b'\xd5\x87\xa4\x24\xaa\x2a\x55')
def test_alaw2lin(self): encoded = b'\x00\x03\x24\x2a\x51\x54\x55\x58\x6b\x71\x7f'\ b'\x80\x83\xa4\xaa\xd1\xd4\xd5\xd8\xeb\xf1\xff' src = [-688, -720, -2240, -4032, -9, -3, -1, -27, -244, -82, -106, 688, 720, 2240, 4032, 9, 3, 1, 27, 244, 82, 106] for w in 1, 2, 3, 4: decoded = packs[w](*(x << (w * 8) >> 13 for x in src)) self.assertEqual(audioop.alaw2lin(encoded, w), decoded) self.assertEqual(audioop.alaw2lin(bytearray(encoded), w), decoded) self.assertEqual(audioop.alaw2lin(memoryview(encoded), w), decoded) encoded = bytes(range(256)) for w in 2, 3, 4: decoded = audioop.alaw2lin(encoded, w) self.assertEqual(audioop.lin2alaw(decoded, w), encoded)
